/Engine/Source/Editor/UnrealEd/Public/WorldPartition/WorldPartitionRuntimeVirtualTextureBuilder.h
Example Command Line: ProjectName MapName -run=WorldPartitionBuilderCommandlet -SCCProvider=Perforce -Builder=WorldPartitionRuntimeVirtualTextureBuilder.
class UWorldPartitionRuntimeVirtualTextureBuilder : public [UWorldPartitionBuilder](API\Editor\UnrealEd\WorldPartition\UWorldPartitionBuilder)